Apparatus for treating fluids under pressure with chemicals



Jan. 20, 1925l 1,523,856

O. BEST Y APPARATUS FOR TREATING FLUIDS UNDER PRESSURE WITH CHEMICALS Filed May 26, 1923 2 Shoots-Sheet l A TTORNEY.

Jan. 20, 1925. 1,523,856

@.BEsT

APPARATUS FOR TREATING FLUIDS UNDER PRESSURE WITH CHEMICALS .Filed May 2.6. 1925 2 Sheets-Sheet 2 INI/ENTOR. 0 es ATTORNEY.

Patented Jan. 20,` 1925.`

y y v1,523,356

PATENT forilclz.

orronnsfr, or san rnanfcrso, cnrrronnra.

APPARATUS `von frenarrno rLUrns UNDER 'rnrfssunn wrrrrv CHEMICALS. l

`.Implication filed May 26, 1923.` vScrial No. 641','768.

To all who/m t may concern.'

Be it known that L OT'ro Bnsr, a citizen of the United States, residinfr at San Francisco, in the county of .SanDFra'ncisco and i State of California, haveinventedcertain new and usefullmprovemeuts in Apparatus for .Treating Fluids Under lPressure'iwith Chemicals, of which the following is a` specification, .reference being had to the accompanying drawings. .i i

- This invention relates to apparatus for treating fluids under pressure with chemicals. An important object of` the invention is to provide a device of thischaracter which is extremely-simple and which maybe readily operated by the layman. f

A further object of theinvention is .to provide" an extremely -simple apparatus for treating fluids under pressurewithchemicals in which a desired proportion of'chemical to thefluid is maintainedy at all times regardlessof changes in the pressure of the fluid atthe source.` A 1 f A further object of the invention is to provide a device of this character inwhich treatmentI of the fluid maybe varied `as de` sired as. for example, inth'e treatment'of water the `water may be .treated either to soften thev same, purifythe same, or to re'- move algae therefrom, without any material change inv they apparatus.

A further object of the invention is to provide'a water softening apparatus of that type inwhichsoftening of the-water- -is accomplished by the Contact of the water with a chemical solution, so constructed and arranged that the proportioningof the chemical to theiwater is accomplished by the control of a single valve.

`A further object of the invention is to provide .in an apparatus of this character,

wherein the water after being softened is filtered, a construction and arrangement such that the use of a pump betweeny the settling or water softening tank and the filter is unnecessary. v

`A still furtherobject of the invention isv to provide a device of this character` which maybe very cheaply produced and readily installed and which is durable andetiicient in service. i

These and other objects I attain by the construction shown in the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of my inventlon and .whereint- .-Figurel is a side elevation partially inv l* igure 2 is a. plan view thereof; and

Figure 3 is a fragment-ary diagrammatic i plan of a multiple apparatusy by means of whicha plurality of chemicals vmay be fed eitheralternately' or simultaneously.

Referring now more particularly to the drawings, the numeral 1:0 indicates a chemical tank, 11 a settling tank. 12 a'filter'and 13 a storage tank. The chemical tank 10 is preferably provided adjacent its Vlower end with a plurality of baffles 14 and at its eXf treme lower end with an agitator 15, shown in the present instance as comprisingfa pro? -peller 16 mounted upon the armature shaft of ann'iotorl?, the armature'shaft beingi directedthrough the wall of the tank 10. The sett-ling ,tank 11 is provided adjacent' one sidethereof with a baffle 18 extending from the top of the tank to va pointadjacent the lower end thereof. In its lower end the tank 1l is, provide'd'with a sludge discharge de.-

vicef19, the discharge of which is controlledy by a valve20disposed exterior-ly of the tank. This `discharge leads to any suitable receptacle such as the sewer S. The filter 12 is of any suitable construction. 1

`M indicates a fluid `supply .main having" preferably being provided :with a dial 27 v over which its operating `handle ranges.. A

branch pipe 28 connects with the pipe`23 intermediate thevalves 24 and 25 and with the lower end of the chemical tank 10. This pipe has arranged therein a control valve 29 similar to the valve 26, `which is by-passed by a pipe 30, having arranged therein a cut-f off valve 31 which is normally closed; i The upper end of the chemical tank 10 is con- .nected with the upper end of the tank 11 at the same side ofthe baflie 18 as the pipe 23 by a pipe 32 having arranged therein a threefrom the pipes 32 'and 23, a pipe 35 leads,

the opposite end of which is connected with the upper 'end` of the filter' 12. Adjacent the filter 12 the pipe 35 has arranged therein a three-waycvalve l36, `by means of which communication may be established between the tank-.r11 and the filter or be-tween'the lter 12 and sewer S by a pipe 37, i

IThe storage tank 13 is preferably arranged ata point considerably above the tilter'12 and is connected withthe discharge ofthe filter-'12v by a pipe 38 discharging into the upper 'end of thestorage tank and communieating with thev lower end of the storage tank through a branch pipe 39. Between vthe cut-off val-ves24 and 25 andthe pipe 23 a branch pipe communicates with the pipe 23, this branch pipe 40 having" arranged therein :a'cut-oilw'falve41 and discharging directlyfinto a chemical charge forming tank v42. This tank has av valved outlet extending 'intol the chemical tank 10 adjacent the lower endthereof, lindicated at 43. i

- In the operation ofthe device the chemical tank 10 is provided with an excess charge of 4some water softening chemical, as for eX- ample, lime: accordingly', water entering this tank through the pipe 28 will come incontact withfwater already within the tank and having inl suspensionitherein this chemical,

the. propeller 16..

this chemical being il continually agitated by Water from the'pipe 28 enteis the tank 10 at the lower e-nd and in passing upwardly through the wateralready inflthetank 10 is converted to a` saturate solution of the chemicah which is directed lfromtheupper end of thetank 10 into tank 1l latene side of the baiille 18. Simultaneously, water from the main is entering the tank 11 at the same side of theV baffle andiningles with the water frointhe Ytank 10, with the vresult `that a chemicalreaction takes `place resulting in' rvprecipitation of v a solution of the lchemical and a largepproportion of the sedimentl contained in the waterfront .the main. This precipitate passes Vwith the water below the lower end of 'tliebaflle 18 and is practicallyT all dropped at the; bottom of the tank 11il The water passing upwardly at the opposite side of the Il baflledischargesfrom the tank 11 into 'thel filter 12.` Attention is directed to the fact that the water lwithin lboth of the tanks 10 and 11 is'underthe:pressure ofthe main M` y'andaccordingly this pressure will be ap- -pliedto vforce the water leaving the tank 11 through .the bed of the filter 12 where any 'water condition therel is no necessity for changing these valves due to any change in the pressure from the main M, since the flowl through these lvalves will be exactly proportional regardless of the main pressure at alltimes. If for any reason a. slightly higher proportion of chemical is necessary for a period `of short duration, this additional chemical may be readily had by opening the valve 31y to ermit the desired excess of water to the tan 10 to by-pass the valve29 thus accomplishing the result desired without disturbing the setting of the valves 27 and 29.` At such times as it is necessary to recharge the chemical tank 1() the valve 41 is opened to partially fill the tank 42 and the mixture is formed in this tank, the valve 41 is then closed together with the valve 24 and the three-way valve 33 is positioned to connect the uy per end of the tank 10 with the sewer. Tllie valve 43 of the connection between the tank 42 and tank 10 is then opened to permit the contents of this tank to pass into the tank 10, these contents displacing an equal amount of lime water which will pass through the pipe 34 to the sewer. After the tank 42 is emptied the valve 43 is closed, the valve 33 is ositioned to connect the tanks 10 and 11 and the valve 24 again opened. YVllen it is desired to cleanse the filter this may be readily accomplished by positioning the three-way valve 36 to connect the upper end ofthe filter with the sewer, at which time the pressure head from the tank 13 willcause the water from this tank to be forced upwardly through the filter bed to cleanse the same, the discharge passing to the sewer.

If desired` a plurality of chemical tanks may be employed, as suggested in Figure 3.y

In this figure I have shown three chemical tanks 10, each having connections with the pipe 23, similar to the connections in Fig. 1. These tanks may be operated singly or in conjunction, a desired proportion of the chemical from each tank being fed to the tank 11 and these tanks may contain either the same chemical or a different chemical. as desired'. Here again attention isdirected to lthe fact that the feed to each ofthe tanks, if all are simultaneously employed, will be proportional at all times irrespective of the main pressure.

While I have above described the use of the apparatus for softening water it will,

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of course, be obvious that by the use of different chemicals in the chemical tank or tanks, the same maybe employed for a wide range of uses. For instance, the chemical may be combined with the water for the destruction of bacilli contained therein, or, a chemical may be added which will purify the same, nor is the use of the device limited to the treatment of water for the same may be employed for treatingy other fluids with equal facility. Y j

lt will, of course, be obvious that the structure hereinbefore described is capable of some change and modification particularly as to the manner of arrangement of the various tanks and connections herein employed and l accordingly do not limit myself to such specific structure as hereinbefore set forth and illustrated except as hereinafter claimed.

l. ln apparatus for treating fluids under pressure other than that generated within the apparatus with chemicals, 4a closed set tling tank having a baffle extending from its top to a point adjacent the bottom thereof, a conduit in communication with a source of fluid under pressure and with the upper end of said tank at one side of said baffle, a branch connected between said source and the upper end of said tank at the same side of the baffle 4including means for saturating fluid passing therethrough with a chemical.

2. ln apparatus for treating fluids under pressure other than that generatedwithin the apparatus with chemicals, a closed settling tank having abaille extending from its top to a point adjacent the bottom thereof, a conduit in communication with a source of fluid under pressure and with the upper end of said tank at one side of said baille, a branch connected between said source an the upper end of said tank at the same side of the baille including' means for saturating fluid passing therethrough with a chemical, a valve in said conduit and avalve in said branch between said means and said source.

3. ln apparatus for treating pressure other than that generated within the apparatus with chemicals, a closed settling tank having a battle extending from its top to a point adjacent the bottom thereof, a conduit in communicationiwith a source of fluid under pressure and with the upper end of said tank at one side of said baffle, a branch connected between said source and the upper end of said tank at the same side of the baffle including means for saturating fluid passing therethrough with a chemical, a valve in said conduit, and a valve in said branch between said means and said source and a valved by-pass about the valve of said branch.

fl. In apparatus for treating uids under fluids under pressure other than that generated within the apparatus with chemicals, a closed settling tank having a baffle extending from its top to a vpoint adjacent the bottom thereof, a conduit in communication with a source of fluid under pressure and with the upper end of said tank at one side of said baffle, a branch connected between said source and the upper end of said tank at the same side of the baille including means for saturating fluid passing therethrough with a chemical. a filter, a conduit connecting the upper end of the tank at the opposite side of the baille and the filter and a sludge removing device in the bottom of said tank.

5. In apparatus for treating fluids under pressure other Vthan that generated within the apparatus with chemicals, a closed settling tank having a baille extending from its top to a point adjacent the bottom thereof, a conduit in communication with a source of fluid under pressure and with the upper end of said tankat one side of Said balile, a branch connected between said source and the upper end of said tank at the same side of the lbaille including means for saturating fluid passing therethrough with a chemical, a storage tank, a connection be# tween the settling tank at the opposite side of the baflle and the storage tank, including a filter and means in the storage tank for controllingthe supply from said source.

6. In apparatus for treating fluids under pressure other than that generated within the apparatus with chemicals, a closed settling tank having a baille extending from its top to a point adjacent the bottom thereof, a source of fluid under pressure, a conduit connecting said source and said tank at one side of said baille, a pair of cut-off valves arranged in space relation in said conduit, a third valve arranged adjacent the tank and constituting a dial valve, a branch connection connecting sa-id conduit intermediate said cut-o valves with said tank and including means for saturating fluid passing therethrough with a chemical, a dial valve arranged within said branch and a valve controlled by-pass for the last named dial valve.

7. In apparatus for treating fluids under pressure with chemicals and in combination', a closed settling tank having a baffle therein extending from its top to a point adjacent the bottom thereof. a chemical tank having horizontal baffles therein adjacent its lower end and connected at its upper end with said .settling vtank at one side of the baffle, an agitator arranged at the bottom of said tank, a lsource of fluid under pressure, a connection between 'the source and the lower end of said chemical tank including a valve and a connection between the source said settling tank at the same side of the baiile as the connection between the chemical and connection between the source and the lower end of said'chemical tank including a valve l. and a connection between the source and saidv settling tank at the same `side of' the baille as the connection between the chemical and settling tanks and likewise including va control valve, a charging tank arranged above said chemical tank, a valved discharge for said charging tank terminating interiorly of said chemical tank'andV adjacent the lower end thereof and a valve in the connection between the chemical and settling tanks positionable to connect the chemical and settlin tanks or the chemical tank with a waste plpe.

In testimony whereof I hereunto allix my signature.

Y OTTO BEST. 

